Question

Convert 70 in2 to SI units. Work across the line and show all steps in the conversion. Use scientific notation and apply the proper use of significant figures. Round your answer to 2 significant figures.

Answer 1

To convert squared inches to squared centimeters we need to remember that one inch is equal to 2.54 cm.

Now that we know we can do the conversion:

`70in^2\cdot\frac{2.54\text{ cm}}{1\text{ in}}\cdot\frac{2.54\text{ cm}}{1\text{ in}}=(451.612in^2\cdot cm^2)/(in^2)=451.612cm^2`

Therefore 70 squared inches is equal to 451.612 squared cm (this is the exact result). If we use two significant figures then this will be equal to:

`4.5*10^2cm^2`

Now, if we want to convert this to squared mm we need to remember that one cm is equal to 10 mm then we would have:

Therefore we conclude that 70 squares inches is